Car-brake.



No. 639,228. Patented Dec. l9, I899. H. S. GUUGHNUUR. CAR BRAKE.

(Application filed July 22, 1899. (No Model.) 2 Sheets$heat I.

WITNESSES. v VENTUR I ms ATTORNEY.

ms uoams PETERS co, PHOTOLITHO, WASHINGTON, u c.

1 No. 639,228. Patenfed Deb. l9, I899.

% H. S. GOUGHNOUR.

CAR BRAKE.

(Application filed July 22, 189B.) (No Model.) 2 Sheets-Sheet 2.

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HENRY S. GOUGHNOUR, OF JOHNSTOWN, PENNSYLVANIA, ASSIGNOR TO THE LORAIN STEEL COMPANY, OF PENNSYLVANIA.

CAR-BRAKE.

SPECIFICATION forming part of Letters Patent No. 639,228, dated December 19, 1899.

Application filed July 22, 1899.

T0 aZZ whom it may concern:

Be it known that I, HENRY S. GOUGHNOUR, of Johnstown, in the county of Cambria and State of Pennsylvania, have invented a new and useful Improvement in Oar-Brakes, of which the following is a full, clear, and exact description, reference being had to the accompanying drawings, which form a part of this specification.

This invention has relation to certain new and useful improvements in car-brakes, and more particularly to that class of brakes generally known as emergency-brakes, which are supplemental to the usual wheel-brakes and are designed for use when from any reason it is desirable to bring the car to a stop more quickly than is possible by the action of the usual wheel-brakes alone.

The object of my invention is to provide a brake of the above-named class which is simple in its construction and positive and efficient in its action, which when released is automatically set, and which can be readily applied to a car-truck without interference with the usual brake-rigging and other adjuncts of a truck.

With these objects in view the invention consists in the novel construction and combination of parts, all as hereinafter described, and pointed out in the appended claims, reference being had to the accompanying drawings, in which- Figure 1 is a side elevation of so much of a car-truck as is necessary to illustrate the application of my invention. Fig. 2 is a plan View of the same; and Fig. 3 is a detail View of one of the brake-carrying bars or arms, the brake-shoe carried thereby, the spring, and spring adjustment.

In the drawings the letter A indicates the truck-wheels, and B the usual brake-shoes.

O designates an arm or bar which is pivoted at c to the runninggear of the truck at a point outside the adjacent wheel and above the center of the same. In the construction shown the arm is pivoted to a strap D, which surrounds and is secured to the axle-box E. The outer end of said arm is bent or shaped to form an angular seat D for a brake-shoe F and adapted to the periphery of the wheel. Said shoe is carried by a pin f, working in Serial No. 724,866. (No model.

slots f, and also by a stem F, around which is coiled a stiff spring G. One end of this spring seats against the shoe and the other end against the closed outer wall of the shoeseat D. F is a nut for adjusting the tension of the spring.

II is a starting-spring, one end being @011- nected to the strap D and the other end to the arm or bar G, the function of this spring being to overcome the friction or inertia of the brake when it is released in the manner hereinafter described and assist the action of gravity in the automatic application of the shoe.

The brake above described may be applied to either one or both wheels. In the latter case the parts above described are duplicated for each wheel, as shown in Fig. 2, and the two arms or bars (1 are connected at their outer ends by a cross bar or rod 11.

K is a holding device which normally keeps the brake out of operative position and which consists of a bar arranged to slide in a guide on the under side of the car-platform, its rear end engaging "underneath the cross bar or web H (or in the case of a single shoe into a projection h on the side of the arm 6) and its forward end connected to a lever L, pivoted at l underneath the car-platform, with its upper end projecting up through a slot Z thereof within reach of the foot of the motorman.

P is a releasing-chain which is connected to the bar H and runs to the usual brake-rigging, so that when the brakes B are released .the auxiliary emergency-brake will also be released.

The operation is as follows: The motorman kicks with his foot the projecting end of the lever L, thereby withdrawing the bar K from the cross-bar H. The brake-shoes F are then unsupported and drop by gravity, assisted by the starting-spring H,to the position shown in dotted lines in Fig. 1. Inasmuch as the distance between the pivots c and the working faces of the shoes F increases as the shoes fall, it will be readily seen that, assisted by the movement of the wheel, said shoes will immediately become tightly set.

The brake-carrying arm or bar- 0 being pivoted to parts which are secured to the axleboxes, it will be readily seen that the action of the brake-shoes is not affected by varia tions in the relative positions of the runninggear, truck-frame, and car-body.

The invention is applicable to both. single and double trucks and to various types of trucks. The shoes 1* have ample room to work above the ordinary brake-shocs B.

The precise construction and arrangement shown and described may obviously be varied in detail without departing from my invention, and I do not therefore wish to be limited thereto.

Having thus described my invention, what I claim, and desire to protect by Letters Patent, is-- 1. The herein-described car-brake, comprising an arm pivotally secured to the axleboX above the center of the wheel to be braked, a brake-shoe carried by said arm and adapted to the periphery of the wheel, and means whereby said shoe is normally held out of contact with the wheel.

2. The herein-described emergency-brake, comprising an arm pivoted to the truck above the center of the wheel to bebraked, a brakeshoe carried by the said arm and adapted to the periphery of the wheel, means for normally holding said shoe out of operative position and for releasing the same, and a spring connected to said arm for assisting its movement when released.

3. The herein-described car-brake, comprising an arm pivotally secured to the axlebox above the center of the wheel to be braked,

a brake-shoe carried by the said arm and adapted to the periphery of the said Wheel, means for normally holding said arm with the shoe out of contact with the said wheel, and for releasing the holding means, and a spring connected at one end to the said arm and at the opposite end to the truck-frame.

4-. The herein-described emcrgency'brake, comprising an arm pivoted to the truck-frame above the center of the wheel to be braked, and having a brake-shoe seat at its outer end, a brake-shoe yieldably held in said seat, and means fornormally holding said arm with the brake out of operative position, and for releasing the same, together with a spring connected to said arm and assisting its movement when released.

5. In a car-brake, the combination with the truck, axle-boxes, axles and wheels, of arms pivoted to the said boxes, and brake-shoes carried by the said arms and adapted to the peripheries of the adjacent wheels.

(5. In a car-brake, the combination with the axle-boxes, axles and wheels, of straps secured to the axle-boxes, arms pivoted to the said straps, and brake-shoes carried by the said arms and adapted to the peripheries of the wheels.

In testimony whereof I have affixed my signature in presence of two witnesses.

HENRY S. GOUGHNOUR.

Witnesses:

JOHN H. KENNEDY, H. W. SMITH. 

